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STANDARD DESIGNATION
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PLATE NO. (metric)
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DESCRIPTION
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SECTION
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| N/A | 1-6 (1M-6) | Small Private Drainage System (91-06-PFM) | 6-0204 |
| N/A | 2-6 (2M-6) | Water Quality Storage Requirements Related to Percent Imperviousness and Rational Formula "C" Factor | 6-0402 |
| N/A | 3-6 (3M-6) | Intensity Duration Frequency Curves | 6-0803 |
| N/A | 4-6 (4M-6) | Time of Concentration of Small Drainage Basins | 6-0803 |
| N/A | 5-6 (5M-6) | Velocity and Flow Time in Gutter | 6-0803 |
| N/A | 6-6 (6M-6) | Flood Frequency Curves for Selected Degrees of Basin Imperviousness | 6-0804 |
| N/A | 7-6 (7M-6) | Lag Time as a Function of Length-Slope Index | 6-0804 |
| N/A | 8-6 (8M-6) | Nomograph for Computing Required Size of Circular Drain, Flowing Full | 6-0902 |
| CTY-1 | 9-6 (9M-6) | Standard Reinforced Concrete Prefabricated "T" or "Y" Connection | 6-0902 |
| CB-1 | 10-6 (10M-6) | Standard Reinforced Concrete Prefabricated Bend | 6-0902 |
| DPW-26 | 11-6 (11M-6) | Concrete Pier for Storm Sewer Pipe | 6-0902 |
| N/A | 12-6 (12M-6) | Closed Conduit | 6-0904 |
| N/A | 13-6 (13M-6) | Energy Losses at Storm Sewer Junctions | 6-0904 |
| N/A | 14-6 (14M-6) | Energy Losses at Storm Sewer Junctions | 6-0904 |
| N/A | 15-6 (15M-6) | Closed Conduit Junction | 6-0904 |
| RC-1 | 16-6 (16M-6) | Minimum Radius of Curvature for Concrete Pipeline | 6-0906 |
| RC-2 | 17-6 (17M-6) | Minimum Radius of Curvature for Concrete Pipeline – Beveled Pipe | 6-0906 |
| RC-2A | 18-6 (18M-6) | Minimum Radius of Curvature for Concrete Pipeline – Beveled Pipe | 6-0906 |
| PD-A, B, C, D | 19-6 (19M-6) | Paved Ditches Type A, B, C, and D | 6-1002 |
| TR-1 | 20-6 (20M-6) | Transition – Paved or Sodded Ditch to Yard Inlet | 6-1002 |
| GB-1 | 21-6 (21M-6) | Gabions – Typical Section Open Channel | 6-1002 |
| GB-2 | 22-6 (22M-6) | Gabions – Typical Section Revetment with Toe Wall | 6-1002 |
| GB-3 | 23-6 (23M-6) | Gabions – Typical Section Weir | 6-1002 |
| N/A | 24-6 (24M-6) | Open Channel | 6-1007 |
| N/A | 25-6 (25M-6) | Energy Loss Coefficients for Curved Channels | 6-1007 |
| N/A | 26-6 (26M-6) | Open Channel Transition and/or Horizontal Curve | 6-1007 |
| N/A | 27-6 (27M-6) | Manning n for Vegetal-Lined Channels (Deleted by 61-98-PFM) | |
| N/A | 28-6 (28M-6) | Curb Inlet Design Chart – Curb Inlets on Grade (88-05-PFM) | 6-1103 |
| N/A | 29-6 (29M-6) | Curb Inlet Design Chart – Curb Inlets on Grade (88-05-PFM) | 6-1103 |
| N/A | 30-6 (30M-6) | Spread and Depth of Gutter Flow vs. Cross Slope (88-05-PFM) | 6-1103 |
| N/A | 31-6 (31M-6) | Capacity of Curb Inlets and Yard Inlets at Low Point in Grade (88-05-PFM) | 6-1103 |
| YI-1 | 32-6 (32M-6) | Standard Yard Inlet (88-05-PFM) | 6-1104 |
| YI-1 | 33-6 (33M-6) | Typical Concrete Apron for Yard Inlets (88-05-PFM) | 6-1104 |
| MH-1 | 34-6 (34M-6) | Standard Manhole Cover and Frame for Use in Easements Outside of VDOT Right-of-Way (88-05-PFM) | 6-1105 |
| N/A | 35-6 (35M-6) | Hydraulic Capacity of Grate Inlets on Grades (88-05-PFM) | 6-1106 |
| N/A | 36-6 (36M-6) | Hydraulic Capacity of Grate Inlet in Sump (88-05-PFM) | 6-1106 |
| N/A | 37-6 (37M-6) | Rooftop Stormwater Detention | 6-1302 |
| N/A | 38-6 (38M-6) | Typical Rainfall Ponding Ring Sections | 6-1302 |
| N/A | 39-6 (39M-6) | Mass Diagram | 6-1303.6A(3) |
| N/A | 40-6 (40M-6) | Unit Inflow Hydrograph – 10-Year – 2-Hour Storm – 1 Impervious Acre | 6-1303.7B |
| N/A | 41-6 (41M-6) | Unit Hydrograph per Impervious Acre 100-Year Frequency Storm | 6-1303.7B |
| N/A | 41A-6 (41AM-6) | Percolation Trench (95-06-PFM, 85-04-PFM) (NOTE: This plate is available in pdf format only.) | 6-1303.4B |
| SW-1 | 41B-6 (41BM-6) | Notice of Location of Stormwater Facility (NOTE: This plate is available in pdf format only.) | 6-1305.7F |
| N/A | 42-6 (42M-6) | Unit Flow Hydrograph – 2-Year – 2-Hour Storm | 6-1305 |
| N/A | 43-6 (43M-6) | Discharge – 15" (375mm) Culvert | 6-1305 |
| N/A | 44-6 (44M-6) | Inflow Hydrograph – 10-Year – 2-Hour Storm – 5-Minute Time of Concentration | 6-1305 |
| N/A | 45-6 (45M-6) | Floodplain | 6-1403 |
| N/A | 46-6 (46M-6) |
24-Hour Design Storm Chart for Spillway Design Flood (SDF) (84-04-PFM) (NOTE: This plate is available in pdf format only.) |
6-1603 |
| N/A | 47-6 (47M-6) | County 100-Year, 24-Hour Rainfall Distribution | 6-1603 |
| N/A | 48-6 (48M-6) | 100-Year, 24-Hour Rainfall Distribution (Hyetograph) | 6-1603 |
| N/A | 49-6 (49M-6) | Typical Wet (Retention) Pond Layout Showing Key Elements | 6-1604 |
| N/A | 50-6 (50M-6) | Typical Dry or Extended Dry (Detention) Pond Layout Key Elements | 6-1604 |
| N/A | 51-6 (51M-6) | Typical Sections at Stormwater Management Facilities | 6-1604 |
| N/A | 52-6 (52M-6) | Permissible Velocities for Vegetated Emergency Spillways | 6-1604 |
| N/A | 53-6 (53M-6) | Schematic Detail of Pre-Cast Circular Riser and Trash Rack for Use with Dry or Extended Dry Detention Ponds | 6-1604 |
| N/A | 54-6 (54M-6) |
Schematic Detail of Standard Cast in Place Rectangular Riser and Trash Rack for Use with Wet or Dry Ponds |
6-1604 |
| N/A | 55-6 (55M-6) | SCS Standard 2-Way Covered Riser for Use with Wet or Dry Ponds | 6-1604 |
| N/A | 56-6 (56M-6) | Typical Wet (Retention) Pond Layout when Using Roadway Embankments as Dams | 6-1604 |
| N/A | 57-6 (57M-6) | Typidpwescal Dry or Extended Dry (Detention) Pond Layout when Using Roadway Embankments as Dams | 6-1604 |
| N/A | 58-6 (58M-6) | Riprap Size for Use Downstream of Energy Dissipators | 6-1604 |
| N/A | 59-6 (59M-6) | Riprap Placement for Outlet Protection Below Culverts | 6-1604 |
| N/A | 60-6 (60M-6) | Riprap Basin | 6-1604 |
| N/A | 61-6 (61M-6) | BMP Extended Drawdown Device (Example Detail) | 6-1604 |
| N/A | 62-6 (62M-6) | Example Low Level Drain for a Wet Pond –Sluice Gate Nomenclature | 6-1604 |
| N/A | 63-6 (63M-6) | Trickle Ditch Detail | 6-1604 |
| N/A | 64-6 (64M-6) | Minimum Geotechnical Design Standards for Small Dams | 6-1605 |
| N/A | 65-6 (65M-6) | Typical Embankment Dam Sections (See continuation on Plate 66-6 (66M-6)) | 6-1605 |
| N/A | 66-6 (66M-6) | Typical Embankment Dam Sections (Continued from Plate 65-6 (65M-6)) | 6-1605 |
| N/A | 67-6 (67M-6) | Standard Concrete Cradle Details for Circular Conduits Extending Through Dam Embankments | 6-1605 |
| N/A | 68-6 (68M-6) | Suggested Minimum & Maximum Core Sizes for Small Dams with Zoned Embankments | 6-1605 |
| N/A | 69-6 (69M-6) | Recommended Side Slopes for Small Dams on Stable Foundations | 6-1605 |
| N/A | 70-6 (70M-6) | Standard Maintenance Access Road Details for Stormwater Management Ponds (88-05-PFM) | 6-1606 |
| N/A | 71-6 (71M-6) | Standard Access Road Gate Design | 6-1606 |
| N/A | 71A-6 (71AM-6) | Standard Access Road Gate Design | 6-1606 |
| N/A | 72-6 (72M-6) | Modified Yard Inlet (Single Throat) (88-05-PFM) | 6-1103.4 |
| N/A | 73-6 (73M-6) | Top Detail Modified Yard Inlet (Single Throat) (88-05-PFM) | 6-1103.4 |
| N/A | 74-6 (74M-6) | Modified Yard Inlet (Double Throat) (88-05-PFM) | 6-1104 |
| 75-6 (75M-6) | Top Detail Modified Yard Inlet (Double Throat) (88-05-PFM) | 6-1104 | |
| N/A | 76-6 (76M-6) | Permissible Shear Stress Cohesive Soils | 6-0203.5 |
| N/A | 77-6 (77M-6) | Permissible Shear Stress Non-cohesive Soils | 6-0203.5 |
| N/A | 78-6 (78M-6) | Porous Asphalt Pavement with Extended Aggregate Base | 6-1304 |
| N/A | 79-6 (79M-6) | Permeable Open Joint Pavement Block | 6-1304 |
| N/A | 80-6 (80M-6) | Example Inlet Schematic for Pervious Pavement | 6-1304 |
| N/A | 81-6 (81M-6) | Reforested Area, Bioretention, or Vegetated Swale Sign | 6-1307, 6-1308, 6-1311 |
| N/A | 82-6 (82M-6) | Bioretention Filter or Basin with Stone Storage | 6-1307 |
| N/A | 83-6 (83M-6) | Bioretention Filter | 6-1307 |
| N/A | 84-6 (84M-6) | Bioretention Basin | 6-1307 |
| N/A | 85-6 (85M-6) | Bioretention Filter or Basin (Outfall Daylighted) | 6-1307 |
| N/A | 86-6 (86M-6) | Bioretention Filter & Basin | 6-1307 |
| N/A | 87-6 (87M-6) | Vegetated Swale with Check Dams | 6-1307 |
| N/A | 88-6 (88M-6) | Vegetated Swale Grass without Check Dams | 6-1308 |
| N/A | 89-6 (89M-6) | Vegetated Swale Plan and Profile | 6-1308 |
| N/A | 90-6 (90M-6) | Tree Box Filter | 6-1309 |
| N/A | 91-6 (91M-6) | Vegetated Roof - Extensive | 6-1310 |
| N/A | 92-6 (92M-6) | Vegetated Roof - Intensive | 6-1310 |
| N/A | 93-6 (93M-6) | HDPE Pipe Trench | 6-0902.20(3) |